Duplex faucet



Jan. 7, 1930. J. Yc.` Ross .1,742,669

DUPLEX FAUCET Fi1ed Feb. 25, 1927 ATTORNEY Patented Jan. 7, 1930 'ruins c. Ross, orvsEArrLE, WASHINGTON i DUPLEX FA'UCET y Applicationnled February 23;v 1927. Serial No. 170,138.

This invention relates `to a duplex faucet, that is, a faucet provided with two valves; and its object is to simplify and otherwise improve faucets of this character whereby 6 either, or both of the valves, selectively, may be used individually or together, by means of a single operating device.

Briefly stated, my invention consists of a faucet having a single discharge opening and two inlets, which latter are adapted to be connected with hotand'cold water service pipes, self-closing valves-of the type shown and described in U. S. Patent No. 1,563,589 dated December 11', 1925-for regulating the flow of water from the respective inlets to the outlet, and a manually operated cam device associated with the valves to effect a controlled delivery of water, as to quantity and tempera-` ture, from the faucet.

The invention further consists in the novel construction, adaptation and combination of parts hereinafter described and claimed.

In the accompanying drawing,-

Figure 1 is a side elevation of a duplexfau'- cet embodying my invention; Fig. 2 is a longitudinal vertical section thereof; and Fig.

3 is a plan view of the same. Fig. 4 is an undersideA view cf the cam which controls thefaucet valves; and Fig. 5 is a side elevation of Fig. 4, part of the spindle being broken away.

In said drawing, the reference numeral 10 represents, generally, a faucet body having a spout 11 extending from a mixing chamei 12 (Fig. 2) at about the midheight of the A517: the bottom of the body are two inlet openings 13 and 131 adapted to be connected respectively with hot and cold water service 40 pipes (Not shown.)

' Communication is hadA by means of valve chambers 14, 141 and ports 15, 151 between the respective inlets 13, 131 and the mixing chamber 12. Said ports are in axial alignment with the respective inlets and are ground or otherwise formed to provide seats for valves 16 and 161, onefor each port. These valves are each substantially similar to the valve disclosed in the patent above referred to, that is to say, with a hollow cylindrical body portion or valve proper and a stem. These valve stems 17 and 171 extend vertically through the mixing chamber 12 thereabove and thence through guideways 18 provided in the body into a cylindrical cam chamber 19.

lWithin the chamber 19 is a rotary cam 20 having rigid therewith a stem 21 which extends through a stuffing box 22 provided in a head 23 which is detachably connected to the faucet body and constitutes, in effect, a party ofthe latter.

24 vrepresents a handle rigidly secured to the stem 21 for rotatin the cam.

As shown, said cam 1s provided at its underside with a circular cam surface arranged to track upon the stems 17 and 171 of the hot and cold water controlling valves 16 and 161, respectivel for forcing the same downwardly from t eir seats, as may be desired, in opposition to the water pressure acting upwardly against the undersidesvof the valves to close the latter against their seats subject to the action of the cam 20. v

The cam 20 is characterized by having a cirn cular body with a depending peripheral rim or flange whose under surface is formed to grovide downwardly directed hummocks, as

D, and F-alternating with recesses A, C and'E. As shown in Fig'. 4, the recesses A and E are at diametrically opposite sides of the cam, and the hummock F is of an arcuate length suicient to have in diametrically opposed relation thereto a portion of thev rece A, hummocks B, D and the recess C. 'By such an arrangement of cam surface elements, the '85 cam when seated upon the floor ofthe chamber 19 and by being suitably rotated will be capable of depressing the stems of the valves-b means of the hummocks-to cause either or th of the valves selectively to be 90 depressed" into their open relation .with respect to the valve seats, and cause either or both the valve stems to enter recesses of the cam to permit the valves to be moved by water pressure into closed relation.

By such devices, my duplex valve provides means operable by a single handle to control the delivery of water at various temperatures from hot and cold water service pipes.

More particularly, when the camis` brought 100 cam from suc assumed position in one rotary direction, until the hummock F 1s broufvht above the stem 171 and with the recess still above the stem 17-a condition in which the cam is represented in Fig. 2-the hot water valve 16 remains closed and the cold water valve 161 is opened; but moving the cam in the opposite rotary position until the central portion of the recess C is above stem 171-and the hummock F is above the stemr17, the valve 161 is closed and the valve 16 is open whereby hot water is delivered from the faucet.

To obtain delivery of warm water the cam is rotated to bring two hummocks, as D and F over both of the valve stems.

The action of the valves to afford full capacity iows and also for regulating them tov shut off the water from either or both of the service pipes is effected as above explained and to regulate the valves to afford a smaller How of water it is requisite only to rotatively position the cam to have the inclined surfaces, so to speak, of the hummocks brought into register with either or both of the valve stems. .Y

As shown'in Fig. 2, the underside of the body head 23 is formed to provide an annular shoulder which acts against the upper surface of the cam 20 to receive the thrust of the v cam and maintain the latter in operable relation with respect to the stemsof the valvesml To facilitate the positioning of the cam` predeterminately, I provide a register consisting of a pointer element 25 on the handle to coact with indicating words-as Hot, Warm, Off and Cold (Fig. 3) on a dial plate 26 secured, preferably, against the head 23 as by means of the gland nut of the stuffing box, as shown.

The construction, operation and manner of using my invention will be understood from the foregoing specification.

What I claim, is

1. A duplex faucet comprising a body having a detachable head therefor, said body.

having a mixing chamber providedwith a single delivery opening and two inlet openings, a valve for each of said inlet openings, said valves being arranged to,l close the respective openings by the pressure of the liquid, a stem for each of the valves, a water tight cam chamber, a rotary cam carried therein and retained by said head in operative engagement with both ofthe stems, said cam being adapted to be rotated for regulating the opening movements of either or both of said valves to predetermined extents, selectively, and means provided exteriorly of the body for controlling the action of said cam.

2. A duplex faucet comprising in combiand two liquid inlet openings, a valve for each ofthe inlet openings, said valves being arranged to close the respective inlet openings by the ressure of the liquid, stems rigid with the va ves, stem guideways between the lower andthe upper of said chambers, said valve stems extending therethrough and adapted to seal said upper chamber against the admission of water thereto, a rotary cam provided in the upper chamber and having a thrust bearing contact with said head, said cam being provided with a peripheral `iange havin a cam surface disposed circumferentialy about its underside and in contactual relations with both of the valve stems, a stem rotatable with the cam and extending from said body, and an o rating handle connected to the outer end o the last named stem for regulating the cam to eiect the opening movements of either or both of the valves selectively.

Signed at Seattle, Washington, this lst day of February, 1927.

c JAMES C. ROSS.

w'A i lOl Ill 

